Structural damage detection using empirical mode decomposition and wavelet analysis: Experimental investigation

Jun Chen, You Lin Xu, Jie Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)

Abstract

This paper presents an experimental investigation on the applicability of empirical mode decomposition (EMD) and wavelet analysis (WA) for identifying the structural damage caused by a sudden change of structural stiffness. A series of free vibration, random vibration and earthquake simulation tests were performed in a three story shear building installed on a shaking table. Structural damage was simulated by suddenly releasing two pre-tensioned springs those were horizontally connected to the first floor of the building. EMD and WA were then applied to the measured acceleration histories to identify the damage instant and the damage location. The results show that the damage instant may be accurately detected in terms of the damage spikes extracted directly from the measurement data by EMD and WA, whilst the damage location may be determined by the spatial distribution of the spikes along the building.
Original languageChinese (Simplified)
Pages (from-to)110-116
Number of pages7
JournalJournal of Earthquake Engineering and Engineering Vibration
Volume27
Issue number1
Publication statusPublished - 1 Feb 2007

Keywords

  • Damage detection
  • Empirical mode decomposition (EMD)
  • Wavelet analysis (WA)

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology
  • Mechanical Engineering

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